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In China, despite the continuous efforts to preserve traditional villages in recent years, a significant amount of cultural heritages continue to vanish. Commonly observed issues such as the lack of coordination between preservation and development, the imbalance in spatial environment conservation and utilization, are pervasive. Regrettably, there is a conspicuous absence of theoretical underpinning in addressing these challenges. In this study, The evaluation factor of spatial environmental protection was selected, and these factors were weighted through expert surveys and the Analytic Hierarchy Process, and applied the multi-objective linear weighting function method to obtain a comprehensive evaluation calculation formula. Subsequently, we conducted an assessment of 28 representative traditional villages in the southern Chinese regions of Guangdong, Fujian, and Jiangxi. Their current issues were systematically analyzed and cluster analysis was applied to discern 11 distinct typologies of traditional village development. Besides, the temporal evolution patterns of these villages were delved into, and their development were categorized into five stages: initiation, enhancement, prosperity, over-development, and decline. Ultimately, based on the spatial environment characteristics of each development type and evolution stage, corresponding guidelines for spatial environment conservation and utilization are proposed, which provides necessary theoretical frameworks for future work this region.

This study examines the impact of large-scale suburban new town development on the commuting time of college and graduate students in the Seoul Metropolitan Area. Household travel diary data from 2016 were analyzed to categorize residential areas and quantify the impacts on commute time to school. Multiple linear regression modeling is used to explore the relationships between development type, individual, and household characteristics and their impact on commute times. The results of the study show that students living in new urban areas have significantly longer commute times than those living in central Seoul, highlighting the differences that result from urban expansion policies targeting middle-class housing. These results suggest that the development of suburban new towns, which was intended to alleviate the housing shortage, has inadvertently lengthened the daily commute time of many students. Thus, a critical reassessment of suburban development strategies is needed to better balance the advantages of residential neighborhoods against the educational and living costs associated with increased travel time. [ABSTRACT FROM AUTHOR]

The evaluation of island carrying capacity is the premise for conducting the island spatial planning and can contributes to guiding island ecological conservation and socioeconomic developments. In this study, the island carrying capacities were evaluated for the three major development types, namely, ecological resource, agricultural production, and urban construction, based on the quantity and quality. The occupancy and vacancy rates of island carrying capacity were measured in different scenarios. Miaodao Archipelago and Dongtou Archipelago in China were selected as the study area to demonstrate the evaluation. The former is constituted all by spatially isolated rocky islands, while the latter is featured by the coexistence of the sandy and rocky islands and the connection with the mainland by bridges. The results indicated the high variances of occupancy and vacancy rates of island carrying capacity at multiple spatial scales. Across the two archipelagos, climate conditions, island composition, and spatial connections with the mainland controlled the spatial variance at this scale. For different types of islands, the sandy island presented distinctly higher occupancy and vacancy rates for agricultural production than the rocky islands. At the single island scale within the same archipelago, the developments of agricultural production and urban construction distinctly increased with the increase in the island area. The dependency of island constructions on the external world in Dongtou Archipelago was higher than that in Miaodao Archipelago. Meanwhile, the difference in traffic conditions between the two archipelagos did not distinctly influence the food dependency on the external world. Then, practical suggestions in terms of quantity control and quality promotion were proposed to improve the island carrying capacity.

Purpose This study identifies whether the hierarchy, development type, and city size have a crucial effect on resilience in ecological terms. Is there a desirable optimum urban form for resilience? The study aims to answer this question by comparing different types of macroform and density of some selected cities in Turkey. Design/Methodology/Approach Denizli, Muğla, and Gaziantep provinces are selected according to the comparability of their population size and urban forms in relation to the greenhouse gas emissions of each city. A retrospective causal comparison method was used in the study. Using the Corine Land Cover Classes program, the change of the artificial surfaces and the city structure between 1990 and 2018 were mapped and detailed graphics were created. Findings Findings show that greenhouse gas (GHG) emissions originating from road transport in Muğla, which has a multi-centered form, were the highest. The surprising result is that Gaziantep has lower GHG emission rate than Denizli although its population is twice the latter. The emission rates of the housing and services sectors were compared with the household size. Gaziantep having the largest household size has the lowest emission rate in this sector. The paper suggests that a hierarchical urban system structure is essential for the resilience of the city to be able to organize itself more effectively, adapt to external changes faster, and create a stronger and more complex structure. City size is an important criterion for low infrastructure cost, efficient use of resources, and capacity to access capital of all kinds. Yet, this criterion may differ in the resilience of the city depending on several factors such as population, area size, and distribution of various urban functions. The development type, on the other hand, is highly effective on GHG emissions as the monocentric cities generate fewer emissions than the polycentric cities. Research Limitations/Implications The GHG reports created for the case areas consisted of different years and different analysis units. This limits the sectors to which cities can be compared. Originality/Value This article is a detailed and original study in terms of evaluating the resilience of Turkish cities with different morphologies.

Knowing the reproductive biology of threatened species is essential for conservation and to establish proper management plans. Heleobia atacamensis, a freshwater snail only known from two locations in the Atacama Saltpan, northern Chile, is currently classified as Data Deficient on the IUCN Red List and Critically Endangered by the Ministerio del Medio Ambiente of Chile. Based on size-frequency distribution, multivariate analysis of shell measurements, and microdissections, we studied the reproductive strategy, recruitment period, sex ratio and sexual dimorphism in this species. Heleobia atacamensis is an oviparous species, with direct development (non-planktotrophic). Females lay capsules of a single egg from which a juvenile resembling a miniature adult hatches after intracapsular metamorphosis is completed. The development type was confirmed by the observation of a paucispiral protoconch (= protoconch I) using scanning electron microscopy. Recruitment was observed across the four seasons of the year, with an increment at the end of austral summer. Results also showed that sex ratio was 1:1, whereas sexual dimorphism was not detected using univariate and multivariate analysis of the shell. The reproductive data provided in this study are a starting point for future management plans.

Knowing the reproductive biology of threatened species is essential for conservation and to establish proper management plans. Heleobia atacamensis, a freshwater snail only known from two locations in the Atacama Saltpan, northern Chile, is currently classified as Data Deficient on the IUCN Red List and Critically Endangered by the Ministerio del Medio Ambiente of Chile. Based on size-frequency distribution, multivariate analysis of shell measurements, and microdissections, we studied the reproductive strategy, recruitment period, sex ratio and sexual dimorphism in this species. Heleobia atacamensis is an oviparous species, with direct development (non-planktotrophic). Females lay capsules of a single egg from which a juvenile resembling a miniature adult hatches after intracapsular metamorphosis is completed. The development type was confirmed by the observation of a paucispiral protoconch (= protoconch I) using scanning electron microscopy. Recruitment was observed across the four seasons of the year, with an increment at the end of austral summer. Results also showed that sex ratio was 1:1, whereas sexual dimorphism was not detected using univariate and multivariate analysis of the shell. The reproductive data provided in this study are a starting point for future management plans. [ABSTRACT FROM AUTHOR]

The evaluation of island carrying capacity is the premise for conducting the island spatial planning and can contributes to guiding island ecological conservation and socioeconomic developments. In this study, the island carrying capacities were evaluated for the three major development types, namely, ecological resource, agricultural production, and urban construction, based on the quantity and quality. The occupancy and vacancy rates of island carrying capacity were measured in different scenarios. Miaodao Archipelago and Dongtou Archipelago in China were selected as the study area to demonstrate the evaluation. The former is constituted all by spatially isolated rocky islands, while the latter is featured by the coexistence of the sandy and rocky islands and the connection with the mainland by bridges. The results indicated the high variances of occupancy and vacancy rates of island carrying capacity at multiple spatial scales. Across the two archipelagos, climate conditions, island composition, and spatial connections with the mainland controlled the spatial variance at this scale. For different types of islands, the sandy island presented distinctly higher occupancy and vacancy rates for agricultural production than the rocky islands. At the single island scale within the same archipelago, the developments of agricultural production and urban construction distinctly increased with the increase in the island area. The dependency of island constructions on the external world in Dongtou Archipelago was higher than that in Miaodao Archipelago. Meanwhile, the difference in traffic conditions between the two archipelagos did not distinctly influence the food dependency on the external world. Then, practical suggestions in terms of quantity control and quality promotion were proposed to improve the island carrying capacity., Competing Interests: The authors declare no competing interests., (© 2022 The Author(s).)